Always write to response
Always write to response

Always write the compiled CSS to response, with truthy `options.response` also writes the file to disk.

kenvunz/node-sass-middleware,reviewninja/node-sass-middleware,HowlingEverett/node-sass-middleware,am11/node-sass-middleware,esthersdev/node-sass-middleware,sass/node-sass-middleware,iMoritz/node-sass-middleware